AI NewsAnthropic Claude Opus 5.5 Unveiled With Faster Performance, Lower Cost Compared to Claude Opus 5

Anthropic Claude Opus 5.5 Unveiled With Faster Performance, Lower Cost Compared to Claude Opus 5

6:36 PM IST · September 23, 2026

Anthropic has introduced Claude Opus 5.5 as the first model in its new Claude 5.5 family. The company says the new model delivers a similar level of performance compared to its high-end Claude Fable 5.1 model on most work and it requiring significantly less compute than its predecessor. Claude Opus 5.5 is claimed to operate at up to 2.5 times the speed in fast mode. Anthropic says it requires substantially fewer tokens to complete complex tasks and leads in, Claude Opus 5.5 leads in agentic coding, computer use, and knowledge work on Anthropic's internal tests.

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